import java.io.*;

public class Simple
{
	public static byte x;
	public static void main(String[] args) throws IOException
	{
		File f = new File(args[0]);
		FileInputStream in = new FileInputStream(f);

		byte[] b = new byte[4];
    int a, j = 0;

    	in.read(b);
    	
    	x = b[0];
    	x = b[1];

		if (b[0] == 'a') j++;
		if (b[1] == 'b') j++;
		if (b[2] == 'c') j++;
		if (b[3] == 'd') j++;
		
		if (j == 4) a = 5 / 0;

		in.close();

		return;
	}
}
